WARBLERS. 19 
After examining a large series of these birds, I have 
come to the conclusion that, as regards the wings, the 
following formule may be relied on:—Wood Wren, 
2nd primary*= 4th; 3rd and 4th with owter webs 
sloped off towards the extremity. Willow Wren, 
2nd=6th; 3rd, 4th, and oth sloped off. Chiff Chaff, 
2nd=7th; 3rd, 4th, 5th, and 6th sloped off. 
GOLDEN-CRESTED WREN. egulus cristatus, Koch. 
Resident ; migrating eastwards and southwards in 
autumn, occasionally in large flocks. See Selby’s 
‘Illustrations of British Ornithology,’ i. p. 250; ‘The 
Zoologist,’ 1848, p. 2020; and Stevenson’s ‘ Birds of 
Norfolk,’ i. p. 136. 
FIRE-CRESTED WREN. Legulus ignicapillus, Jenyns. 
Occasional winter visitant. Professor Newton in- 
forms me that the nest found at Blonorton by Mr. 
Brown, particulars of which were communicated to 
Mr. Hewitson for his ‘ Kggs of British Birds, proved 
to belong to the Golden-crested Wren. 
Fam. TROGLODY TID A. 
COMMON WREN. Troglodytes parvulus, Koch. 
Resident and everywhere common. 
* The first primary is quite rudimentary, and is therefore not 
taken into consideration. 
C2 
